Vehicle-spring.



H.- J; MITCHELL. VEHICLE" SPRING. APPLICATION FILED MAY 19, 1913.

` 1,078,055? Patented Nov. 11, 1913.

a "muoz :Nrrn o sin rss Hmmra4 maenner., crema-HART; INDIANA;

'VEHICLE-SPRING.

Speccatinniof let-ters. Betere nafi-,enteafivovi 11;-, 191e.

Application nl ed May 19, 1.913: Serial No. 768,476.

To all whom t may concern:

Be it known that I, HENRY J MITCHELL, a citizenof the United States, residing at Elkhart, in the county of Elkhart and State of Indiana, have invented certain new and useful Improvements in Vehicle-Springs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and.

use the same.

This invention relates to springs for wheeled vehicles such as motor cars; and it consists of an auxiliary spring device, secured to the main leaf springs which support the car body, as hereinafter fully described and claimed.

In the drawings, Figure 1 isa side view of a portion of a car body and two leaf springs provided with an attachment according to this invention and showing the axle in section. Fig. 2 is a vertical section, taken' on the line .frin Fig. 1.

The axle 2.of the cal` is mounted in a bearing 3, and a lower leaf spring 4 is secured to the bearing 3 by a fastening device 5 of any approved construction.4 An upper leaf spring 7 is secured to the body 8 of the car in any approvedway, andthe end portions of the two leaf springs are pivotally connected together by pins 9, the said springs being curved in opposite directions and adaptedl to support .the body of the car above its axle.

order to absorb undesirable vibrations of the car bod on its leaf springs, an auxiliary spring evice is provided and is connected to the Itwo leaf springs on one side of the axle. This spring device is provided with a c linder 10 having its upper and lower en s closed by caps 11 and 12 respectively. A `piston 14 is arranged inside the cylinder at about the middle of its length, and is secured upon a piston-rod 15 which projects throu h holes in the two caps. The middle part o the cylinder is provided with a laterally projecting lug 17 which rests on the lower leaf spring 4 to one side of the axle. A plate 18 is arranged under the spring 4. and has an eyeor loop 19 which is slidable on the cylinder 10. A clamping .bolt 20 is vice. Helical s rings 28 are arranged inthe end portions o the cylinder between its piston and the caps 11 and 12, and are arranged to have a different time of vibration from theleaf springs and so 4that they will check periodic and cumulative oscillations of the vehicle body-and absorb shocks. This auxiliary spring device can readily be attached to almost all motor cars which are provided with leaf springs, and it can be made of different sizes and strengths to co-act with different leaf springs. The piston-rod can 'be uncoupled from the plate 24 by slacking or unscrewing the nuts, when the auxiliary spring device is not required in action', and

the nuts can be arranged to act as tappets if desired when partially unscrewed.

What I claim is: 1. The combination, with a car body, a car axle, and a leaf spring which supports the body from the axle; of a cylinder provided with a laterally projecting lug at its middlev part which bears on one surface of the spring, a plate which bears on the other surface of the spring and having an eye which is slidable on the cylinder, a clamping bolt engaging with the said plate and lug, a piston slidable in the cylinder and provided with a piston-rod which is operatively connected with the car body, and springs arranged between the piston and the ends of the cylinder.

2. The'combination, with a car body, a car axle, and a pair of leaf springs which support the body from the axle; of a cylinder provided with a laterally projecting lug at its middle part which rests on the middle part ofthe lower leaf spring to one side of the axle, a plate arranged under the lower leaf spring and provided with an'eye which is` slidable on the cylinder, a clamping bolt engaging with the said plate and' lug, a piston sidable in the o vlino'ler and provided screwtnreaded portion on each side of the Wlth a, piston-rod having a screwthreaded last sind plate. 10

orton at :its upper end, springs arranged In testlmony whereof I have ufixed my etween the piston and the ends of the cy1insignature in the presence of two witnesses.

5' der, a plate secured to the upper leaf spring HENRY J. MITCHELL.

and having a hole which is sldable over the Witnesses: lseorevvthrewied end portion of the piston- E. D. WATERS,

rod,' and fastening nuts screwed on the said vHARRY A. ZooK. 

